CAS3 means Combined Arms Services and Staff School in Military
Similar to CAS3
100ID - 100th Infantry Division101AD - 101st Airborne Division
102 RQS - 102nd Rescue Squadron
106 RQW - 106th Rescue Wing
10BASE-T - 10 Megabits per second, Baseband, Twisted pair
11AD - 11th Airborne Division
11B - Military Occupational Specialty for Infantryman
View all in Military